I am integrating to Yahoo Webservices Mail JSON API from Java. I am able to retrieve ListMessages using the JSON example from developer site.

When I try to call GetUserData using this request

{
  "method": "GetUserData",
  "id": 1234567890
}

I am getting the following error:

{"result":null,"error":{"code":"Server.PhpServerError","message":"Server error","detail":null},"id":1234567890}

I am unable to figure out what I am missing. Is there a place with JSON examples I can look through? If not, can someone help me with this issue?

Thanks.

Geeth